A "Tempus Anyone" plot bunny:
How might things have gone differently in that alternate universe if Tempus had kidnapped Lois and taken her there at a point in time when she had powers? (Via red kryptonite laser, or lightning.) Or, if while she was there she got caught in a lightning storm with altClark?
altClark's reaction to someone else having powers would be interesting, not to mention throwing a stick in Tempus' bicycle wheel is soooo much fun.